well i was just reading up on evaporation lines and i think thats what it is.
it showed up at 2 mins a white line
3 minutes it was a pink with greyish ghost line. very faint.
5 minutes it was still the same.
10 minutes looked the same.
few hours later i have a thin dark pink line.
i have never had an evaporation line before on these tests.
i guess BFN =(